﻿<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>输出26个英文字母</title>
    <script type="text/javascript" language="JavaScript">
        for(let i = 65;i< 91;i++){
            document.write(String.fromCharCode(i));
        }
    </script>
</head>
<body>

</body>
</html>